US9207520B2 - Projector apparatus having a foldable filter device - Google Patents

Projector apparatus having a foldable filter device Download PDF

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Publication number
US9207520B2
US9207520B2 US12/932,077 US93207711A US9207520B2 US 9207520 B2 US9207520 B2 US 9207520B2 US 93207711 A US93207711 A US 93207711A US 9207520 B2 US9207520 B2 US 9207520B2
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United States
Prior art keywords
filter
filter holding
holding member
projector apparatus
holding members
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Expired - Fee Related, expires
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US12/932,077
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English (en)
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US20110211170A1 (en
Inventor
Noriyuki Hagino
Yoshihisa Wada
Kazuhiro TAKAI
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Sony Corp
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Sony Corp
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Assigned to SONY CORPORATION reassignment SONY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TAKAI, KAZUHIRO, WADA, YOSHIHISA, HAGINO, NORIYUKI
Publication of US20110211170A1 publication Critical patent/US20110211170A1/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/145—Housing details, e.g. position adjustments thereof
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces

Definitions

  • the present invention relates to a filter device and a projector apparatus having such a filter device. More particularly, the invention relates to a filter device required for taking in external air and to a technique used in a projector apparatus having such a filter device.
  • An electronic apparatus such as projector apparatus for projecting images have a cooling mechanism for suppressing heat generated at internal processing sections as a result of operations of the apparatus by taking external air into the apparatus to cool the same.
  • a filter of the type described above must receive maintenance such as cleaning or replacement each time the apparatus employing the filter is operated to a certain degree, and the filter is therefore constructed such that it can be inserted and removed in and from the apparatus.
  • Mechanisms for inserting and removing a filter in and from a projector apparatus include relatively simple mechanisms formed by an external air intake port and a filter covering the same, a frame-like element formed by the external air intake port and the filter holding the same serving as an inserting/removing mechanism.
  • Patent Document 1 JP-A-10-186513 discloses an exemplary projector apparatus in which a filter 241 is disposed to be attachable to an air intake port as shown in FIG. 3 accompanying the document.
  • the filter in the case of the above-described mechanism in which a frame member holding a filter is slid into an apparatus from a side of the body of the apparatus to house the filter inside the apparatus, if the filter has a great size in the longitudinal direction thereof, the filter can hit a wall and the like when it is pulled out from the apparatus.
  • Projector apparatus are mostly fixed to a predetermined location in a room, e.g., the ceiling of the room when they are used.
  • a filter pulled out from the apparatus for the purpose of maintenance may interfere with the wall, and the replacement of the filter may be disabled in some cases. Therefore, the apparatus must be installed at such a distance from the wall that filter replacement can be carried out.
  • the distance at which the apparatus must be spaced from the wall to allow filter replacement increases accordingly, which has been problematic in that there are increased limitations on the installation of the apparatus.
  • a filter device to be used in an apparatus having an intake port for taking external air into the body of the apparatus.
  • the filter device includes first and second filter elements allowing air taken in through the intake port to pass therethrough and first and second filter holding members holding the first and second filter elements such that they are linearly connected side by side, the holding members being connected to be foldable in the position where the filter elements are connected.
  • a projector constituting the apparatus body has a filter insertion hole through which the first and second filter holding members are slid in the direction of the linear alignment between them.
  • the filter holding members can be contained in the apparatus body.
  • one of the filter holding member can be inserted with the other filter holding member folded.
  • the filters can be replaced or cleaned if a space having a length equal to or greater than the length of one filter holding member is available beside the apparatus body. Therefore, the space required for the installation of an apparatus body can be smaller than that in the related art, and limitations placed on a space where an apparatus body is to be installed are relaxed compared to limitations placed according to the related art.
  • FIG. 1 is a perspective view of a projector apparatus according to an embodiment of the invention showing an exemplary general configuration thereof;
  • FIG. 2 is a perspective view of the projector apparatus according to the embodiment of the invention showing a filter member partially inserted therein;
  • FIG. 3 is a side view of the projector apparatus according to the embodiment of the invention in the state shown in FIG. 2 ;
  • FIG. 4 is a perspective view of the projector apparatus according to the embodiment of the invention showing an exemplary internal configuration thereof;
  • FIG. 5 is a perspective view of the projector apparatus according to the embodiment of the invention showing the exemplary internal configuration thereof;
  • FIG. 6 is a perspective view of a filter member according to the embodiment of the invention showing an exemplary configuration thereof.
  • FIG. 7 is a partially exploded perspective view of the filter member shown in FIG. 6 .
  • FIG. 1 is an illustration showing an overall configuration of a projector apparatus according to an embodiment of the invention.
  • the present embodiment is a projector apparatus which displays an image as follows.
  • An optical block provided in the apparatus irradiates a display panel with light from a light source.
  • Image light (projection light) of an image to be displayed formed by transmitting or reflecting the light from the light source at the display panel is projected on a screen through a projection lens to display the image.
  • a projection lens 11 is mounted on a front end of the body of a projector apparatus 10 , the body being formed by a box-like housing. Projection light exits the projection lens 11 .
  • FIG. 1 shows one side face and a rear end of the projector apparatus 10 .
  • Two air intake ports 12 and 13 are disposed on the side face such that they extend side by side in the horizontal direction. Air taken through the air intake ports 12 and 13 blows on an optical block in the projector apparatus 10 as a cooling air flow.
  • the intake air is passed through filters 31 and 32 mounted to a filter member 20 as shown in FIG. 1 (the filter 31 is not shown in FIG. 1 ), although details of the configuration for passing the intake air will be described later.
  • the filter member 20 is shown outside the apparatus in FIG. 1 .
  • the filter member 20 of the present embodiment has an elongate shape, and the member is formed by connecting two filter holding portions, i.e., a first filter holding portion and a second filter holding portion 22 into a straight shape at a connecting portion 26 .
  • One of the filter holding portions can be folded toward the other filter holding portion at the connecting portion 26 .
  • a specific configuration of the filter member 26 will be described later.
  • a cover 14 is mounted to a rear end 15 of the body of the projector apparatus 10 .
  • the cover 14 is shown apart from the apparatus body in FIG. 1 .
  • a filter insertion hole 16 is exposed by removing the cover 14 .
  • the filter member 20 formed by connecting two filter holding portions into a straight shape is linearly inserted into the filter insertion hole 16 from one end 20 a thereof.
  • another end 20 b of the filter member 20 is exposed at the filter insertion hole 16 .
  • a grip portion 28 is provided at the end 20 b , and a maintenance worker can remove the filter member 20 by pulling out the filter member 20 with the grip portion 28 held by his or her fingers.
  • FIG. 2 shows a state in which the filter member 20 has been inserted into the filter insertion hole 16 halfway (the second filter holding portion 22 has been inserted halfway).
  • the first filter holding portion 21 can be folded upward about the connecting portion 16 serving as a fulcrum.
  • FIG. 3 is a side view of the apparatus in the same state as shown in FIG. 2 , and FIG. 3 shows a state in which the first filter holding portion 21 is folded and lifted upward.
  • the filter member 20 can be replaced with new one when a distance L from the rear end 15 of the projector apparatus 10 to a wall 90 exceeds half of the length of the filter member 20 (or the length of each of the filter holding portions 21 and 22 ) even in a small amount.
  • FIG. 6 is a general perspective view of the filter member 20
  • FIG. 7 shows an exploded view of the second filter holding portion 22 with the first filter holding portion 21 shown in an assembled state.
  • the first filter holding portion 21 and the second filter holding portion 22 have the same configuration for holding the filter, the configuration being shown in the exploded view of the second filter holding portion 22 in FIG. 7 .
  • the filter member 20 is formed by connecting the first filter holding portion 21 and the second filter holding portion 22 at a connecting portion 26 such that holding portions are integrated to extend straightly, each of the holding portions being formed from a resin.
  • the connecting portion 26 is a bendable and rotatable connecting portion, as described above.
  • the connecting portion 26 is formed by connecting an end 21 a of the top surface of the first filter holding portion 21 with an end 22 a of the top surface of the second filter holding portion 22 using a resin film having a thickness smaller than the thickness of the regions of the holding portions surrounding the same. Since the connecting portion 26 has a small thickness as thus described, the first filter holding portion 21 and the second filter holding portion 22 can be folded toward each other.
  • the filter member 20 can be folded such that one end 20 b of the filter member 20 is put in contact with another end 20 a of the same.
  • an engaging part 29 a provided at the end 20 a engages an engaging part 29 b provided at the other end 20 b to keep the member in the folded state. That is, the engaging parts 29 a and 29 b serves as anchoring mechanism parts for holding the first filter holding portion 21 and the second filter holding portion 22 in a lapped state.
  • a filter member 20 When a filter member 20 is transported to be mounted to an apparatus or to be used as a replacement for maintenance, the member can be transported in such a folded state.
  • the elongate filter member 20 can be transported with its length shortened as thus described.
  • Ribs 27 are provided on both lateral surfaces of each of the first filter holding portion 21 and the second filter holding portion 22 of the filter member 20 .
  • FIGS. 6 and 7 show the ribs 27 provided on one side of the filter holding portions with the ribs on the other side omitted.
  • the ribs 27 fit in grooves 16 a provided on the duct section 70 as will be described later to allow the filter member 20 to be slid linearly.
  • the mechanism of the first filter holding portion 21 and the second filter holding portion 22 for holding filters 31 and 32 will now be described with reference to FIG. 7 .
  • the first filter holding portion 21 and the second filter holding portion 22 hold the filters 31 and 32 using the same configuration.
  • the disposition of a filter in the second filter holding portion 22 will now be described with reference to FIG. 7 , and the description completely applies to the first filter holding portion 21 .
  • a holding frame 23 is provided at the bottom of a frame made of resin which constitutes the second filter holding portion 22 , and the filter 31 is supported by the holding frame 23 at a bottom surface thereof.
  • the filter 31 which is constituted by a sponge-like resin sheet or nonwoven fabric, is placed on the holding frame 23 .
  • the filter 31 has holes 31 a provided in four positions near edges thereof, and protrusions 24 provided on the holding frame 23 in four inward positions thereof (only two locations are shown) are inserted into the holes 31 a of the filter 31 to secure the filter 31 in place.
  • a frame-like spacer 40 constituted by a resin member is disposed on the filter 31 , and the filter 32 is disposed on the spacer 40 .
  • the filter 32 is also constituted by a sponge-like resin sheet or nonwoven fabric, but the filter 31 is formed from a material having finer pores through which are is allowed to pass when compared to the filter 32 .
  • the filter 32 also has holes 32 a provided at four corners thereof, and protrusions 41 provided at four corners of the spacer 40 are inserted into the holes 32 a of the filter 32 to secure the filter 32 in place.
  • a presser member 50 is placed on the filter 32 to press the top surface of the filter 32 .
  • the presser member 50 has three protrusions 51 provided in three positions on each side thereof, and the protrusions 51 are engaged with respective anchoring parts 25 provided in six locations on side faces of the body of the second filter holding portion 22 to secure the presser member 50 , whereby the filters 31 and 32 are secured in place.
  • Two filters 31 and 32 are disposed in each of the first filter holding portion 21 and the second filter holding portion 22 such that the filters are spaced from each other at a predetermined interval. Thus, particles of dust included in air taken from the outside are removed by the four filters in total.
  • FIG. 4 is an illustration showing the external shape of the optical block 60 in the projector apparatus 10 and showing a duct section 70 disposed beside the optical block 60 .
  • the external shape of the projector apparatus 10 (the shape of the housing) is represented by an imaginary line (two-dot chain line).
  • a filter member 20 is horizontally disposed in the duct section 70 shown in FIG. 4 .
  • FIG. 5 shows the configuration of the apparatus with the duct section 70 omitted (to show the filter member 20 ).
  • the duct section 70 has a plurality of openings 73 provided in series on a side of the same associated with the position where the air intake ports 12 and 13 show in FIG. 1 are disposed, and the filter member 20 is disposed at the bottom of the duct section 70 .
  • two Scirocco fans 71 and 72 are disposed under the filter member 20 to cause air filtered through the filter member 20 to blow on the bottom of the optical block 60 disposed adjacent to the duct section.
  • the two Scirocco fans 71 and 72 blow external air on a part of the optical block 60 where a display panel section 62 is disposed, i.e., a heat-generating part of the optical block 60 to cool the part.
  • three display panels are disposed to form the display panel section 62 , and the two Scirocco fans and 72 supply air to the three display panels in cooperation with each other. Air is also supplied from the Scirocco fans 71 and 72 to a light source section 61 , which is another heat-generating part of the optical block 60 , to cool the section.
  • the two Scirocco fans 71 and 72 are disposed directly under the filter member 20 . Therefore, external air taken in through the openings 73 of the duct section 70 (or the air intake ports 12 and 13 ) reaches the Scirocco fans 71 and 72 after passing through the four filters 31 and 32 of the filter member 20 . Thus, the air is supplied to the Scirocco fans 71 and 72 with particles of dust removed from the same.
  • filters having a relatively large surface area are disposed as filter for cleaning cooling air, whereby a filter member 20 extending substantially the entire length of the side face of the apparatus is formed. Operations of mounting and removing the filter member 20 in and from the apparatus can be carried out in a small space.
  • the filter member 20 can be folded in the middle thereof as shown in FIGS. 2 and 3 , the filter member can be replaced with new one even when a wall 90 exists near the rear end of the apparatus if a distance L that is substantially equivalent to one half of the length of the filter member 20 is left between the apparatus and the wall.
  • the use of large filters allows cleaning and maintenance operations to be carried out at longer intervals, and the space required around the projector apparatus 10 to perform such operations can be small.
  • the embodiment is advantageous in that limitations placed on a space for installing the main body of the projector apparatus can be relaxed when compared to the related art.
  • the first filter holding portion 21 and the second filter holding portion 22 of the filter member 20 are made foldable toward each other by a simple resin feature having a small thickness connecting the holding portions 21 and 22 . Therefore, the connecting portion can be formed at the same time when the holding portions 21 and 22 are molded from a resin. This is advantageous in that the connecting portion for allowing the filter member to be folded can be formed simply at a low cost.
  • the filter member 20 When the filter member 20 is transported to be mounted to an apparatus or to be used as a replacement for maintenance, the member can be folded to halve the length thereof as indicated by the arrow X in FIG. 6 .
  • the elongate filter member 20 can be transported with its length shortened as thus described, and the transportation of the filter member 20 can be carried out with improved operability.
  • the filter member 20 is constructed so as to be easily locked in the folded state by the engaging portions 29 a and 29 b , particles of dust deposited on the filters 31 and 32 can be confined in the filter member. It is therefore possible to prevent particles of dust from scattering when the filter member 20 is removed from the projector apparatus 10 for transportation.
  • the two filters 31 and 32 held by the holding portions 21 and 22 of the foldable filter member 20 are disposed at an interval from each other, and the material of the filters 31 and 32 are different in coarseness. Large particles of dust are removed when eternal air first passes through the filter 32 , and smaller particles of dust are thereafter removed by the finer filter 31 .
  • the embodiment is advantageous in that the air filters are capable of cleaning air with very high efficiency.
  • the filter member 20 including the two filters 31 and 32 having a relatively great surface area can be folded compactly as thus described, the filter member can be efficiently operated.
  • FIG. 1 and other figures merely show an exemplary position of the insertion hole at which the filter member is inserted into the body of an apparatus such as a projector apparatus and exemplary positions of air intake ports,
  • each of the filter holding portions 21 and 22 holds two filters 31 and 32 is also merely an example.
  • Each filter holding portion may alternatively be configured such that only one filter is disposed therein.
  • the filter member 20 of the present embodiment is configured to be folded halfway at one folding position, two or more folding positions may alternatively be provided.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
US12/932,077 2010-02-26 2011-02-17 Projector apparatus having a foldable filter device Expired - Fee Related US9207520B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010041999A JP5589441B2 (ja) 2010-02-26 2010-02-26 フィルタ装置及びプロジェクタ装置
JPP2010-041999 2010-02-26

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US20110211170A1 US20110211170A1 (en) 2011-09-01
US9207520B2 true US9207520B2 (en) 2015-12-08

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CN104936394A (zh) * 2014-03-21 2015-09-23 鸿富锦精密工业（深圳）有限公司 电源供应器
CN203883953U (zh) 2014-04-22 2014-10-15 深圳市绎立锐光科技开发有限公司 色轮防尘散热模组及光源系统
CN104898359A (zh) * 2015-06-18 2015-09-09 无锡启晖光电科技有限公司 投影机灯体的防尘散热结构
US10324365B2 (en) * 2015-11-27 2019-06-18 Sony Corporation Projector-type display apparatus
CN111365792B (zh) * 2020-04-17 2024-09-03 北京小米移动软件有限公司 空气处理装置

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